<form action="" class="form-horizontal" role="form">
  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-8">
      <volist id="vo" name="linkNavs">
      <a href="{$vo.url}" class="btn btn-primary submit" >{$vo.name}</a>&nbsp;&nbsp;
      </volist>
    </div>
  </div>
</form>